| 摘要 |
<p>[PROBLEMS] To provide a photocatalyst titanium oxide sol that exhibits antibacterial activity in dark places and that even when silver is contained, is stable without discoloration by light, and provide a coating composition and member utilizing the same. [MEANS FOR SOLVING PROBLEMS] There is provided a photocatalyst titanium oxide sol comprising silver, copper and quaternary ammonium hydroxide. Further, there is provided a photocatalyst coating composition having the photocatalyst titanium oxide sol dispersed in a binder. Still further, there is provided a member having a surface of base material coated with the photocatalyst coating composition. This photocatalyst titanium oxide sol has realized containing of highly antibacterial silver through ingenious use of copper and quaternary ammonium hydroxide. Thus, not only can antibacterial effects by silver alone in dark places be exerted but also, in conventional uses involving ultraviolet sterilization, etc., more effective antibacterial effects can be attained by the use of this photocatalyst titanium oxide sol in combination with an ultraviolet sterilizing device, etc.</p> |
